what hang on the back skimmer should I go with

Originally Posted by gobytron

Just a somewhat side note...
If you have your overflow and flow set up properly, you will NEVER see microbubbles in your tubing.
The only reason that this happens is not enough flow to create enough force to have the bubbles organically pulled out of the tube...

I think that this is th emost common error in setting these up and also the main reason for failure.

yup your right. my tank is drilled got it that way It is an old school tank, stand pipe with overflow box mounted on top the stand tube tank up less real estate and you can put a top on the overflow box. I had to hunt for a bulk head to fit the hole because they use to just use pipe and fittings and a whack of silicone or or Orings on both sides of the glass to make sure the screw and connector fitting would seal around the hole. I did get a bulk head thanks had to look around and found one that was threaded. The old way would some times leak after a while if you did not re tighten the fittings after a couple of months but then you were good to go.

Bill